31313223212032 has 22 divisors (see below), whose sum is σ = 62595867106568. Its totient is φ = 15656611605504.

The previous prime is 31313223212023. The next prime is 31313223212057. The reversal of 31313223212032 is 23021232231313.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15289658748 + ... + 15289660795.

Almost surely, 2^{31313223212032} is an apocalyptic number.

31313223212032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31313223212032 is a deficient number, since it is larger than the sum of its proper divisors (31282643894536).

31313223212032 is an equidigital number, since it uses as much as digits as its factorization.

31313223212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30579319563 (or 30579319545 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31313223212032 its reverse (23021232231313), we get a palindrome (54334455443345).

The spelling of 31313223212032 in words is "thirty-one trillion, three hundred thirteen billion, two hundred twenty-three million, two hundred twelve thousand, thirty-two".